Home / 87,347.48-120,543.79-49,119.06

Finding the Fourth Proportional to 87,347.48, 120,543.79 and 49,119.06

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Solution

The fourth proportional to 87,347.48, 120,543.79 and 49,119.06 is: 67,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,347.48 : 120,543.79 = 49,119.06 : x
  2. Step 2: Convert to fraction form
    87,347.48/120,543.79 = 49,119.06/x
  3. Step 3: Cross multiply
    87,347.48x = 120,543.79 × 49,119.06
  4. Step 4: Simplify right side
    87,347.48x = 5,920,997,653.64
  5. Step 5: Solve for x
    x = 5,920,997,653.64/87,347.48
  6. Step 6: Final answer
    x = 67,786.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.